Composition cylinder for looms



Feb. 24, 1931. M. J. SMITH ET AL 1,793,722

COM OSITION CYLINDER FOR LOOMS Filed Sept. 27, 1929 0 00066000 0000 0 000 0 0000000000 0000 00- 0 0 00 0000 0000 00 o o o 0000 00 000 0000 0 0 0000 00 00000 00 00 00000000000000 00 00000 00 00 0 00 00 00 00000 00 00 000 0 0 00000 00008000 00 NZZes J ENTORS flsv ber l C/zzlgozz 25W I W ATTORNEYS.

Patented Feb. 24, 1931 UNETED $5;

PATENT OFFICE MILES 5. SMITH AND HERBERT I. CHILSON, OF SALISBURY, NORTH CAROLINA, AS-

SIGN'ORS TO GAROLII IA a COB-IZPAEQ'Y, O31 NORTI-I CAROLINA, A

CORPORATION OF NORTH CAROLENA COMFOSETION CYLINDER FOR LOOlVIS Application filed September 2 This invention relates to a composition cylinder for looms and more particularly to the type of a cylinder known as the jacquard cylinder.

m We have found from practical experience that the ordinary all-n1etal or wood type of a cylinder does not give entire satisfaction, because of many reasons, among which we can mention their short life, which is overcome by our improved type of a cylinder.

Therefore, the object of our invention is the construction of a cylinder having a composition shell, which can be worked and milled without breaking or chipping as wood will f do; further, the cost of production will be far less than with a wood cylinder; also, because of the hardness of our composition shell, it will last much longer than wood.

lVith the foregoing and other objects in view, our invention comprises certain novel constructions, combinations and arrangements of parts as will be hereinafter fully described, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims.

In the drawings:

Figure 1 is a top plan view of a cylinder constructed in accordance with the present invention, while Figure 2 is a longitudinal, vertical, central sectional view of the same.

Figure 8 is a sectional view taken on line 33, Figure 2, and looking in the direction of the arrows.

5 Figure 4: is fragmentary plan view of our cylinder showing elongated slots instead of the conventional round holes shown in Fig ures l and 2.

Referring to the drawings by numerals, l designates preferably a wood core upon which is formed or placed our composition shell 2. We use th term shell in broad sense, meaning the body of the cylinder. Suitable metal ends 3, 3 are fastened to the shell and core in any convenient manner, and a shaft '7, 1929. Serial No. 395,563.

4 extends through the core. Ordinary projections 5, of the usual adjustable type, are positioned in projection receiving sockets 5a, in the construction of the cylinder for engagement with the cardboard form 6, which is used by the textile industry on these cylinders in making a given design.

The holes or" a cylinder may be of any desired shape, such as round holes 7 (Figs. 1 and 2) or elongated holes or slots 8 (F i 4), in which the needle of the loom may fall.

The shape of the cylinder in cross section is preferably square, (Fig. 3).

ur composition shell for producing a complete cylinder preferably comprises the following ingredients Pounos Clean thin brown rubber Zinc oxide l0 Dixie clay 25 Cycline oil 3 Lime 8 Accelerator .4 Sulphur 15 Total 91.4

Our preferred process for the production of the finished cylinder, including of necessity, the composition shell, is as follows:

W e first break down the clean thin brown rubber, which simply means running the crude rubber through a mill which masticates the rubber and puts it in working condition for mixing with the other ingredients.

Then the masticated rubber is put on to another mill which has two large heated steel rollers between which the rubber passes. While on this mill we mix with said rubber, cycline oil to soften it; then is added Zinc oxide, Dixie clay, lime, sulphur, and the accelerator. After the different ingredients have been thoroughly mixed, the mixture is then taken from this mill and allowed to cool.

This material is then run through a calender for the purpose of making it the right thickness and width to be used in curing.

Then the sheet-' e material is placed over a suitable core. around which placed material is also placed an iron mold or fabric tape, the purpose of which is to hold the material in shape as it is being cured.

Then this wrapped material (around the core) is cured under heat for three periods as follows:

1 hour at 260 degrees 1 hour at 2'44: degrees 1 hours at 28" degrees In other words, the cure is to be stepped up an d requires in time 3% iours to complete the process.

At this time, the shell is taken from the heater and allowed to cool; it is then ready to be finished.

When sufficiently coolen, the shell is polished and machined for the holes or elongated slots.

Then the completed shell is ready for the next and final step of our process, to wit: the assembling of the same with the shaft element and the co-operating parts for producing the finished cylinder.

From the foregoing, it will be noted that it is possible to wrap the material or sheet around the core 1 prior to curing the same under heat for the three periods designated. Then shaft 4 is placed in position with the metal ends 3 assembled as shown.

In constructing a cylinder, the core 1 is not absolutely necessary, but it is preferable to use the same for the purpose of having something solid on which to fasten the iron pieces or metal ends 3. Of course, in carrying out the process, the material is Wrapped or placed around a suitable core, which core in this step of our process is a part of the mold.

hile we have described the preferred embodiment of our invention and illustrated the same in the accompanying drawings, certain minor changes or alterations may appear to one skilled in the art to which this invention relates, during the extensive manufacture of the same, and we, therefore, reserve the right to make such changes or alterations as shall fairly fall within the scope of the appended claims.

What we claim is:

1. As a new article of manufacture, a moulded shell for a loom cylinder, comprising a hard compounded body provided with transverse holes extending through from its outer face to its inner face.

2. As a new article of manufacture, a shell for a loom cylinder, comprising a body of very hard composite material, said body provided with holes opening on the outer and inner faces of said body, said body provided in its ends with screw sockets, and said body provided in its outer face near its ends with projection receiving sockets, substantially as shown and described.

3. As a'new article of manufacture, a loom cylinder, comprising an elongated wood core, a shaft extending through and beyond the ends of said core, a hard non-metallic composition shell fitting tightly upon and terminating short of the ends of said wood core, said shell provided with transverse holes closed at their inner ends by said wood core, metal ends on the ends of the wood core against the ends of said composite shell, and fastening means extending t irough said metal ends and into the ends of said composite shell, substantially as shown and described.

In testimony whereof we hereunto affiX our signatures.

MILES 5. SMITH. HERBERT I. CHILSON. 

